Clean-out mechanism for the ends of rolls



HAzLE, .JR 2,058,869

CLEAN-OUT MECHANISM FOR THE ENDS 0F ROLLS Filed Spt. 4, 1934 2 SheeisSheet 1 #TWEE/ZEE Qct 27, 1936# A. J. HAZLE, JR 2,058,869.

CLEAN-OUT MECHANISM FOR THE ENDS OF ROLLS Filed Sept. 4, 1934 2 Sheets-Sheet 2 Fig .Z

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` Y STATES PATENT OFFICE CLEAN-OUT MECHANISM FOR THE ENDS OF ROLLS Albert J. Hazle, Jr., Chicago, Ill., assignor to B. F. Gump Co., Chicago, Ill., a corporation of Illinois Application September 4, 1934, Serial No. 742,555

2 Claims. (Cl. 83-12) This invention relates to clean-out mechanism washers 6 bear against the inner side of the porfor the ends of rolls. In mills involving grinding tion b of the housing.

rolls for granulating coffee or cereals, a certain Adjacent the` inner surface of each side wall amount of the granulated products always seeps 5a there is a saddle I0 having lower concave sur- 5 or finds its way to the spaces beyond the endsl faces II conforming to the peripheries of the 5 of the rolls where it cakes or clogs up and eventuroll under which leakage is adapted to occur.

ally raises the saddle upon the rolls and increases This leakage is partially forced through the use the leakage and sometimes distorts the bearings of spirally corrugated rolls,

or causes a rupture of parts. Besides this leak- Upon each end of each roll there is a clean- 10 age usually goes to waste. out lug I2. These lugs may be secured upon 10 This invention is designed toovercome this the rolls in any suitable manner, they are howobjection in the provision of means for conever preferably welded thereon. The lugs are stantly cleaning out the spaces beyond the ends preferably secured adjacent the peripheries of of the rolls to prevent the granulated material the rolls as shown in Figure 3 and engage the from accumulating and caking up or distorting outer peripheries of the inner felt washers 6. 15 parts of the mill and returning such leakage to According to the illustrated structure just dethe mill. scribed, the ends of the rolls are spaced from the The invention comprises the novel structure side walls 5a of the housing by the felt washers and combination of parts hereinafter described 6 and the lugs I2 upon the ends of the rolls have and more particularly pointed out and dened lower concave faces I3 conforming to the periph- 20 in the appended claims. ery of the washers 6. During the rotation of the In the accompanying drawings which illustrate rolls, these lugs will engage the peripheries of a preferred form of this invention and in which the washers 6. Consequently, the granulated similar reference numerals refer to similar coiiee that creeps over the ends of the rolls will features in the different Views: fall upon the washers 6 and will be carried thereg5 Figure 1 is a horizontal sectional view through from by the lugs I2 until it falls to the bottom a coffee mill involving this invention. of the casing to be discharged with the granu- Figure 2 is a sectional View taken substantially lated coffee that passes between the rolls. upon the line II-II of Figure 1 with parts in It will accordingly be apparent that this inelevation. vention not only serves to prevent the accumu- 30 Figure 3 is a sectional View taken upon the lation of leakage at the ends of the rolls in such line III--III of Figure 1 looking in the direction a mill, it also serves to return the leakage while of the arrows. still fresh to the mill.

In the drawings, there is shown a pair of I am aware that many changes may be made grinding rolls I and 2 provided with end journals and numerous details of construction may be 35 3 which are journalled in suitable bearings 4, one varied through a wide range without departing roll and its bearings is relatively adjustable with from the principles of this invention., and I,

respect tothe other. therefore, do not propose limiting the patent The rolls are encased in a housing 5, the side granted hereon otherwise than necessitated by walls 5a of which extend between the ends of the the prior art. 40

rolls and the bearings 4. A felt washer 6 or the I claim as my invention: like is positioned against each end of each roll. 1- In a Cereal mill, a hOIlSIlg haVing Side Walls,

These washers which surround the journals on a pair of grinding rolls mounted between said the rolls also bear against the inner surfaces of side walls and having the ends spaced from said the side walls 5a of the housing. The washers 6 walls, said rolls having journals extending 45 are of smaller diameter than the ro-lls to prothrough said side walls, saddles abutting said vide a circular space between the peripheries side walls and engaging the adjacent parts of thereof an-d the peripheries of the rolls. Felt the tops o-f said rolls and overlying the spaces washers 'I are also positioned upon the journals between said walls and the ends of said rolls,

of the rolls between the outer surfaces of the washers of smaller diameter than said rolls posi- 50 side walls 5a and collars 8 loosely mounted upon tioned between said side walls and the ends of said journals. The collars 8 are held against the said rolls beneath said saddles, and lugs upon washers 'I by holders 9. The housing also has a the ends of said rolls above said washersV for portion 5b extending between the rolls against sweeping leakage escaping from under said sadone side of which the Washers 8 also bear. The dles into Said housing, 55

2. In a cereal mill, a housing having side walls, a pair of grinding rolls mounted between said side Walls and having their ends spaced from said walls, said rolls having journals extending through said walls, bearings beyond said walls in which said journals are mounted, stationary rings surrrounding said journals between said bearings and wall, wall saddles engaging the tops of said rolls adjacent said side walls and over- 10 lying the spaces between the ends of the rolls and having concave surfaces conforming to the peripheries of the rolls, and lugs upon the ends of the rolls for sweeping leakage escaping under said saddles into said housing, said leakage normally falling into the spaces between the ends of the rolls and said walls and said stationary rings confining said leakage in the sphere of action of said lugs and preventing the same from entering said bearings.

ALBERT J. HAZLE, JR. 

